Aroma diffuser



FIG. 1 is a front, right and top perspective view of an aroma diffuser showing my new design;

FIG. 2 is a front and bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines shown depict environment that forms no part of the claimed design. 

CLAIM I claim the ornamental design for an aroma diffuser, as shown and described. 